Pinwheel feed



H. G. DYBVIG PINWHEEL FEED Sept. 6, 1938.

Original Filed July-2, 1956 W M 0 W A Patented Sept. 6, 1938 )PlINWlHllElEL lFlElED new a. Dybvig, Dayton, one, assignor to .llohn Q. Sherman, llliayton, @1110 Application July 2, 1936, Serial No. tacos Renewed Uctober ii, 193? 2% Claims.

This invention relates to writing machines and in more particular to a feeding device having a positive feed for advancing superposed strips of continuous length record material in registry past writing position.

An object of this invention is to provide a pin feeding device that is easily constructed from a small number of parts, easily adjusted, manufactured at a low cost, yet emcient and dependable.

Another object of this invention is to provide a pin wheel feeding device wherein the pin wheel is internally disposed with respect to the platen, but in tangential relation.

Another object of this invention is to propel a pin wheel directly from the platen. I Another object of this invention is to provide feeding pins entering and leaving the record material along curved paths, the curvature of the teeth being such as to contact the margin of the record material while passing through one of the curved paths.

Another object of this invention is to mount the pin wheel upon an axis within the platen but eccentrically disposed with respect to the axis of the platen.

Another object of this invention is to provide means for adjusting the pin wheel feed from one position to another.

Another object of this invention is to provide a pin feeding device tangentially disposed to the record material passing through a curvilinear path, the radius of curvature of the pin wheel being less than the radius of curvature of said path.

Other objects and advantages reside in the construction of parts, the combination thereof and the mode of operation, as will become more apparent from the following description.

Fig, 1 discloses a fragmentary perspective view of a typewriter having a platen provided with a pin wheel mounted therein.

Fig. 2 is a longitudinal sectional view of the platen and appurtenances thereof, taken substantially on the line 22 of Fig. 3.

Fig. 3 is a cross sectional view of the platen taken adjacent to the pin wheel feeding device on the line 3-3 of Fig. 2.

Fig. 4 is an enlarged fragmentary view showing a portion of the platen and in particular the internal gear teeth.

Fig. 5 is a schematic perspective view of another modification.

Although this invention may be utilized with any type of a writing machine or tabulating machine wherein continuous length superposed strips of record material may be used, it has been shaft 28.

((Cl. Mil-133) cludes a cylindrical shell it, having each end mounted upon disc members it and 2d. The disc member i8 is fixedly attached to a tubular sleeve 22 journalled in the frame (it which may constitute a portion of the carriage it. The disc 20 is fixedly attached to a hub 26 nonrotatably mounted upon a stub shaft 28 Journalled in member 30, which may also be a portion of the carriage frame l2. The platen may be rotated by the operator actuating the knob 32 shown to the left of Figs. 1 and 2, through a suitable friction clutch 3d, having a portion fixedly attached to A suitable ratchet wheel 36 cooperates with the conventional escapement to permit line by line feed of the platen.

The platen it may also be rotated by actuating the knob lll shown to the right of Figs. 1 and 2, which knob is fixedly attached to a pintle d2,

. journalled in member it and driving a driver gear t6, meshing with a pinion d8 suitably journalled in member M to drive a gear 50 fixedly attached to the sleeve- 22. Aside from the gear mechanism it, t8 and 50, the apparatus thus far described operates in a manner well known to those skilled in the art.

A plurality of equally spaced holes 62 are cated adjacent each end of the platen in close proximity to the inner surface of the discs 88 and 2h. The cylindrical sleeve i 6 has a center portion that is located between the holes 62 recessed or depressed to receive a rubber facing 64, so as to present a suitable resilient surface to the writing material, thereby providing a suitable backing for the impingement of the type.

A pair of pin wheels it, each provided with a plurality of equally spaced feeding pins l2, are mounted for rotation upon a shaft it fixedly secured to a pair of crank arms it, one of which is attached to a pintle i8 journalled in a suitable recess in the end of the shaft- 28 and the other attached to a shaft 80 extending through the hub 22 and having one end thereof connected to a lever 84, which lever is provided with a latch 85 suitably seated in a selected aperture 88 in the sideof the carriage frame i2.

The teeth 12 in the pin wheel ID are arranged to project through the openings 62 throughout a portion of the periphery of the platen so as to engage suitable apertures 90 in the margins of the record material 92 to feed the several superposed strips in registry past the writing position. In addition to positively feeding the record material 92 around the platen It, the feeding pins 12 accurately align the superposed strips one with the other, so that perfect registration is maintained while passing the normal writing position.

The shape of the feeding pins i2 is such that as the pin advances through the apertures 62 in the platen, the rear margin of the pin contacts the rear portion of the aperture 62 and when the pin 12 is retracted or is leaving the engagement of the record material the leading edge thereof contacts a leading portion of the aperture 62 until the pin 12 clears the platen. This results in accurate alignment of the record material, as the leading arcuate surface of the feeding pin, remains in constant engagement with the record material from the time it first engages it until the feeding pin is retracted in its entirety from engagement with the record material.

Although the edges of the aperture 62 may be utilized as the equivalent of gear teeth in the platen l4, meshing with the feeding pins 12 to actuate the pin wheel 10 freely rotatable upon the eccentrically mounted shaft 14, each of the wheels 10 have been provided with externally disposed teeth I meshing with the internal teeth I02, projecting inwardly from the cylindrical shell I6, so as to secure accurate relative movement between the pin wheel I0 and the platen It. In view of the fact that the pitch line of the gear teeth I00 and I02 is substantially flush with the surface of the platen I4, the peripheral speed of the platen and the paper engaging portion of the feeding pins 12 is substantially equal, so as to cause the record material while passing the platen to travel at a speed substantially equal to the surface feed of the platen. As may best be seen by referring to Fig. 3, the position of the pin wheels 10 may be adjusted from the dot dash position to the full line position by shifting lever 84 from one extreme position to the other. Both the pin wheels 10 are shifted in unison in that the mounting thereof, that is, members 14 and 10, together with the shaft 00, are rigidly attached to each other and moved in unison. When the pin wheels 10 are K in the dot dash position as disclosed in Fig. 3, the pins 12 engage the holes located in the record material on either side of the writing position of the typewriter. When the pin wheel 10 is shifted from the dot dash position to the full line position the conventional feeding device on the typewriter may be used to actuate or feed the writing material frictionally past writing position, as the feeding pins project beyond the periphery of the platen at a point beyond the normal path of the record material 92.

In the modification disclosed in Fig. the platen 0 has been schematically shown provided with one pin wheel adjacent one end thereof and a feed roller 2 also having a pin wheel feed adjacent the corresponding end thereof. The opposite end of the platen and the opposite end of the roller H2 have not been provided with pin wheel feeding devices. The platen H0 and the roller H2 may be driven in unison by suitable driving mechanism not shown. In this modification the record material 92 instead of being aligned transversely while passing the writing position, has one margin thereof accurately aligned and held taut while passing writing position, thereby maintaining registry. The platen may be mounted in the conventional typewriter carriage and the aligning roller to the rear thereof. The record material requires only one row of apertures or feed holes. These may be placed in the margin. If the pin feeding device is mounted near the center of the platen,

the aligned row of feed holes may then be centrally located.

If it is desirable to use record material that has not been marginally punched, the portion of the platen beyond the feeding pins may be used in cooperation with the conventional friction feeding devices normally found on typewriters and other writing machines to frictionally feed writing material past writing position, thus eliminating the necessity of providing a pin wheel feeding device that is shiftable from operative to inoperative position when it is desired to use the typewriter or writing machine, as the case may be, with record material or short length writing material that is not marginally punched.

Although the preferred modification of the device has been described, it will be understood that within the purview of this invention various changes may be made in the form, details, proportion and arrangement of parts which generally stated, consist in a device capable of carrying out the objects set forth, in the novel parts, combination of parts and mode of operation, as disclosed and defined in the appended claims.

Having thus described my invention, I claim: 1. In a writing machine for use with continuous length superimposed strips of record material having therein longitudinally spaced feed holes, the combination of a rotary platen having internally disposed teeth arranged in substantially aligned relation with equally spaced apertures in the periphery of the platen, with a pin wheel feeding device including a support within the platen and a pin wheel mounted upon said support, said pin wheel having a toothed gear having externally disposed teeth meshing with the teeth of the platen, said wheel having a plurality of equally disposed feeding pins fixedly mounted therein, the diameter of the gear being less than the diameter of the platen, sothat as the gear is eccentrically disposed with respect to the axis of the platen beyond the periphery of which the feeding pins project for a portion only of the periphery thereof.

2. In a writing machine for use with continuous length superimposed strips of record material to be fed in registry past the writing position of a writing machine, said record material having therein longitudinally spaced feeding holes, the combination of a rotary platen having internally disposed teeth adjacent each end thereof, with a pin wheel feeding device including an eccentrically disposed support mounted within the platen and a pair of pin wheels mounted thereon and having the pins fixedly attached thereto for projection through a series of circumferentially spaced holes in the platen beyond the periphery thereof, said pin wheels havingexternally disposed teeth meshing with the teeth of the platen so as to rotate the pin wheel feeding device with the platen as it is actuated to feed the record material in registry past writing position.

3. A pin wheel feeding device for use with continuous length superimposed strips of record material having therein longitudinally spaced holes for use in a writing machine, the combination including a rotary platen, a support, and a rotary pin wheel mounted upon said support eccentrically within the platen including a series of relatively fixed radial feeding pins the diameter of the pin wheel being substantially less than the diameter of the platen which has a plurality of aligned circumferentially spaced holes through which the feeding pins on the wheel pass incident to rotation of the platen into feeding engagement in succeeding spaced holes in the record material during rotation of the platen.

4. A pin wheel feeding device for use with continuous lengths of superimposed strips of record material having therein longitudinally spaced equally spaced holes disposed in aligned rela- 4 'tion about the periphery of the platen with a feeding device, including a support, having a pin .wheel mounted upon said support within the platen, said pin wheel having a plurality of equally spaced relatively fixed radial feeding pins adapted to be projected through the apertures in the platen, the number of feeding pins upon the pin wheel being less than the number of 5. In a pin wheel feedingdevicefor use with continuous length superimposed strips of record material having at least a row of punched feeding holes, the combination of a rotary platen having a plurality of equally spaced peripherally arranged holes, the distance between the holes of the periphery of the platen being substantially equal to the distance between the holes in the record material, an eccentrically disposed oscillatory support, and a pin wheel mounted within the platen upon said oscillatory support, the diameter of the bin wheel bein much less than the diameter of the platen whereby the pin wheel is eccentrically disposed with respect to the platen. feeding pins fixedly mounted in the periphery of the pin wheel, said feeding pins projecting cyclicly through the apertures in the platen, the oscillation of said support with respect to the platen adjusting the pin wheel from one position to another.

6. A pin wheel feeding device for use with continuous lengths of superimposed strips of record material having therein longitudinally spaced feedholes for use in a writing machine, the combination of a rotary platen member with an eccentrically mounted pin wheel feeding member mounted within the platen and having a plurality of equally spaced feeding pins, said platen member having a series of circumferentially spaced openings through which the feeding pins are adapted to be projected, the diameter of the pin wheel feeding member being less than the diameter of the platen member whereby the feeding pins are projected beyond the surface of its platen member for only a portion of the periphery, thereby causing the pin wheel feeding member to, rotate alt-substantially the same ,peripheral speed as that of the platen member.

"I. A'pin wheel feeding device for use with continuous lengths of superimposed strips of record.

material having therein longitudinally spaced holes for use ina writing machine, the cOmbination of a rotary platen with a pin wheel feeding device mounted within the platen and having a plurality of equally spaced relatively fixed radial feeding pins, said platen having a series of circumferentially spaced openings through which the feeding pins are adapted to project, the

diameter of the pin wheel feeding device being less than the diameter of the platen whereby the feeding pins are projected beyond the surface of the platen for only a portion of the periphery thereof, the pin wheel feeding device' being directly engageable with the platen thereby causing the pin wheel feeding device to rotate at substantially the same peripheral speedas that of the platen.

8. In a pin wheel feeding device for advancing superimposed strips of record material having therein longitudinally spaced feed holes in registry past the writing position'of a writing machine. the combination including a rotary cylindrical platen provided withequally spaced circumferentially disposed holes adjacent each end thereof, a normally stationary shaft mounted within the platen but eccentrically disposed with respect to the axis of rotation of the platen, and a pair of pin wheels rotatably mounted upon said shaft each including a series of spaced relatively fixed radial feeding pins, the pins of each pin wheel projecting through the holes in the platen into feeding engagement in the holes in the record material throughout a portion of the periphery of the platen to advance the record material in registry past writing position.

9. A pin wheel device for advancing superimposed strips of record material having therein longitudinally spaced feed holes in registry. past the writing position of. a writing machine, the combination including a rotary cylindrical platen provided with a series of circumferentially spaced holes adjacent each end thereof, a normally stationary shaft mounted within the platen but eccentrically disposed with respect to the axis of rotation of the platen, a pair of oscillatory supports for the shaft, said supports being mounted for oscillation about the center of rotation of the platen,-and a pair of pin wheels rotatably mounted upon said shaft, each including a series ,of spaced relatively fixed radial feeding pins the pins of each pin wheel projecting through the holes in the platen into feeding engagement in the holes in the record material throughout a portion of the periphery of the platen for advancing the record material past writing position, the oscillation of said supports shifting the pin wheels from operative to inoperative position and vice versa.

10. In a pin wheel feeding device for advancing superimposed strips of material having therein longitudinally spaced feed holes in registry past the writing position of a writing machine, the combination including a rotary cylindrical platen provided with a series of circumferentially spaced holes adjacent each end thereof, a normally stationary shaft mounted within the platen but eccentrically disposed with respect to the axis of rotation of same, oscillatory means accessible from the exterior of the platen for supporting said shaft, and a pair of pin wheels rotatable uponsaid shaft, each including a series of spaced relatively fixed radial feeding pins the pins of each pin wheel projecting through the pin holes in the platen into feeding engagement in the holes in the record material throughout a portion of the periphery of the platen to advance the record material in registry past writing position, the oscillation of said supports from one position to another adjusting the pin wheels from operative to inoperative position, or vice versa.

ii. In a pin wheel feeding device for advancing in registry past the writing position of a writing machine superimposed strips of record material having therein longitudinally spaced feed holes the combination including a rotary cylindrical platen provided with a series of circumferentially spaced holes adjacent each end thereof, 'a normally stationary shaft mounted within the platen but eccentrically disposed with respect to the axis of rotation of same,'oscillatory means accessible from the exterior of the platen for supporting said shaft, a pair of pin said means from one position to another adjusta.

ing the pin wheels from operative to inoperative position or vice versa, and means on the exterior of the platen for locking said oscillatory means in adjusted position.

12. In a'pin wheel feeding device for advancing superimposed strips of record material having thereinlongitudinally spaced feed holes in registry past the writing position of a writing machine, the combination including a rotary cylindrical platen provided with a series of circumferentially spaced holes adjacent each end thereof, a normally stationary shaft mounted within the platen but eccentrically disposed with respect'to the axis of rotation of the platen, oscillatory means for supporting the shaft permitting adjustment thereof from one position to another, and a pair of pin wheels rotatably mounted upon said shaft, each including a series of spaced relatively fixed radial feeding pins the pins of each pin wheel projecting through the holes in the platen into feeding engagement in the holes of the record material throughout a portion of the periphery of the platen to advance the record material in registry past writing position, the oscillation of said oscillatory means shifting the pin wheels from operative to inop erative position.

13. In a pin wheel feeding device for advancing superimposed strips of record material having therein longitudinally spaced feed holes in registry past the writing position of a writing machine, the combination including a rotary cylindrical platen provided with a series of circumferentially spaced holes adjacent each end thereof, said platen having tubular supports, a pin wheel feeding device mounted within said platen, said pin wheel feeding device including a series of spaced relatively fixed radial feeding pins progressively projected through the holes in the platen into feeding engagement in the feed holes in the record material disposedabout the platen a shaft eccentrically disposed with respect to the axis of rotation of the platen and journalled in said tubular supports, means for adjustably securing the end of said shaft in any adjusted position, and a platen actuating mechanism including a knob, a pair of gear members concentrically disposed, a countershaft, a pinion mounted upon the countershaft, and meshing with said gears, one of which is fixedly attached to the platen and the other fixedly attached to a hand knob, said means for locking the shaft in adjusted position extending outwardly between the gears.

14. In a pin wheel feeding device for advancing superimposed strips of record material having therein longitudinally spaced feed holes in registry past the writing position of a writing machine, the combination including a rotary cylindrical platen provided with a series of circumferentially spaced holes adjacent each end thereof, a pair of pin wheels having a diameter substantially less than the diameter of the platen; each including a series of spaced relatively fixed radial feeding pins progressively extended through the holes in the platen into feeding engagement in the spaced holes in the record material, means for eccentri- I platen. said means including a pair of concentrically disposed gears meshing with a common pinion mounted upon a countershaft, one of said gears being fixedly attached to the platen and the other to a hand knob for rotating the same.

15. In a pin wheel feeding device for advancing superimposed strips of record material, having therein longitudinally spaced feed holes in registry past the writing position of a writing machine, the combination including a rotary, cylindrical platen provided with a series'of cir'cumferentially spaced holes adjacent each end thereof and internally disposed gear teeth, a normally stationary shaft mounted within the platen but eccentrically disposed with respect to the axis of rotation thereof and a pair of pin wheels rotatably mounted upon said shaft, including spaced relatively fixed radial feeding pins said pin wheels being provided with externally disposed gear teeth meshing with the internal gear teeth of the platen, the pins of each pin wheel projecting through the holes in the platen into feeding engagement in the holes in the record material throughout a portion of the periphery of the platen to advance the record material in registry past writing position.

16. A pin type strip feeding device for progres sively advancing a strip of material having therein a succession of longitudinally spaced holescomprising a cylindrical roll having therein a series of circumferentially spaced holes, a rotary pin wheel including a rotary succession of spaced radial feeding pins eccentrically located interiorly of the roll for advancement in a path of travel eccentric thereto and having intermeshing engagement in the circumferentially spaced holes of the roll through which the pins are progressively projected into feeding engagement in the longitudinally spaced holes in a strip of material being advanced thereby.

17. A feeding roll for a strip feeding apparatus, a rotary pin wheel interiorly disposed in eccentric relation therewith, including a rotary series of spaced radial feeding pins, the path of travel of which intersects the periphery of the roll, said pins having internal intermeshing engagement with the roll for unison rotation therewith during which the pins of said series are progressively projected outwardly beyond the periphery of the roll into feeding engagement in longitudinally spaced holes in a strip of material being advanced thereby.

18. A feeding roll for a strip feeding apparatus, having therein a succession of circumferentially spaced holes, a rotary pin wheel eccentrically disposed interiorly of the roll, including a rotary series of spaced feeding pins having internal intermeshing engagement in the holes'of the roll for unison rotation therewith during which the pins of said series are progressively projected outwardly beyond the periphery of the roll into feeding engagement in longitudinally'spaced holes in a strip of material being advanced thereby.

19. A feeding roll for strip feeding apparatus having therein a succession of circumferentially spaced holes, a rotary pin wheel eccentrically disposed interiorly of the roll including a series of spaced radial feeding pins of less number than the holes, having intermeshing engagement in the holes in the roll for unison rotation v therewith during which the pins are progressively projected outwardly through the holes into feeding engagement in longitudinally spaced holes in a portion of record material being advanced by rotation of the roll, and a retractable mounting for the pin wheel by adjustment of which the pin wheel may be shifted into and out of engaging relation with the record material.

20. A feeding roll for a strip feeding apparatus, a rotary pin wheel eccentricaily disposed interiorly thereof, including a series of spaced radial feeding pins, said roll and pin wheel having internal intermeshing engagement of one said member with the other for unison rotation during which the pins are advanced through a path eccentric to the roll and progressively projected beyond the periphery of the roll through a series of circumferentially spaced holes therein into feeding engagement in longitudinally spaced holes in a strip of record material being advanced by rotation'of the roll and an adjustable mounting for the pin wheel, by adjustment of which the points of projection of the pins beyond the roll may be varied.

21. A strip feeding apparatus including a revoluble cylindrical member having therein a series of circumferentially spaced holes, a revoluble series of spaced radially disposed feeding pins mounted interiorly of the cylindrical member for rotation about an axis eccentric to that of the cylindrical member and having intermeshing engagement in the circumferentially spaced holes in said cylindrical member through which the pins are progressively projected into feeding engagement in longitudinally spaced holes in a strip of material being advanced thereby.

22. A strip feeding apparatus including a revoluole cylindrical member having therein encircumferential series of spaced holes, an annular series of radially disposed feeding pins of less number than the holes in the cylindrical memben eccentrically disposed within the cylindrical member having progressive intermeshing engagement in said holes whereby differential rotary motion is transmitted to the series of feeding pins by rotation of the cylindrical member through the holes of which the intermeshing pins are proiected into feeding engagement in longitudinally spaced holes in a strip of material being advanced thereby.

23. A strip feeding apparatus including a revoluble cylindrical member having therein a series of circumferentially spaced holes, a series of spaced radially disposed feeding pins of less munber than said holes located interlorly thereof have ing progressive intermeshing engagement in the holes of the cylindrical member and differentially revoluble in unison therewith in a path of travel eccentric thereto, during which rotation the intermeshing pins are projected through succeeding holes in the cylindrical member into feeding engagement in longitudinally spaced holes in a strip of material being advanced thereby.

24. Strip feeding means for a writing or imprinting apparatus wherein a continuous strip of record material having therein a succession of longitudinally spaced feed holes is progressively advanced past an impression receiving position, including a recessed roller relative to which the strip is advanced, having therein a series of circumferentially spaced holes, a pin wheel located interiorly of the roller including a succes-' slon of spaced relatively fixed radial pins eccentrically intermeshing in the circumferential holes of the roller and projecting there beyond into progressive feeding engagement in the holes in the strip in unison with the rotation of the roller.

25. Strip feeding means for a writing or im printing apparatus wherein a continuous strip of record material having therein a succession of longitudinally spaced feed holes is progressively advanced past an impression receiving position, including a recessed roller relative to which the strip is advanced, having therein a series of circumferentially spaced holes, a revoluble pin wheel having spaced relatively fixed radial feeding pins located within the recess of the roller for internal intermeshing engagement in the circumferentially spaced holes thereof through which the pin holes in the record strip and control means for bodily shifting the pin wheel relative to the roller into and out of operative feeding relation with the record strip.

26. Strip feeding means for a writing or imprinting apparatus wherein a continuous strip of record material having therein a succession of longitudinally spaced feed holes is progressively advanced past an impression receiving position, including a recessed roller relative to which the strip is advanced, having therein a series of circumferentially spaced holes, a. movable pin wheel located within the recess of the roller in cluding spaced relatively fixed radial pins progressively projected through the holes in the roller and beyond the periphery thereof into printing apparatus wherein a continuous strip of record material having therein a succession of longitudinally spaced holes is advanced past an impression receiving position by progressive engagement of pin type feeding means in said holes, including a roller relative to which the strip is advanced, a rotary pin wheel Journaled within the periphery and intermediate the ends of the roller in eccentric relation therewith, including spaced relatively fixed radial pins intersecting and projecting beyond a limited portion of the periphery of the roll into feeding engagement in the holes in the strips, and driving means for actuating the pin wheel by the rotation of the roller, but at a different speed of rotation.

28. A strip feeding means for a writing or printing apparatus wherein a continuous strip of record material having therein a succession of longitudinally spaced holes is advanced past an impression receiving position by progressive of teeth upon the roller with which the pin wheel teeth intermesh for transmitting unison rotary motion from one member to the other.

n G. DYBVIG'.

. feeding engagement in the holes in the strip, and

'wheel pins are projected into successive spaced 

